Weather Almanac: Portland, OR 97213

🗓️ Historical norms for December

December avg. precipitation
🌧️ 5.49"
December days below freezing
📉 ≈8.7 days
Average December lows 32°F – 38°F
USDA Zone
8b
Annual extreme lows 15°F to 20°F
Last Spring Frost (36°F)
🌷 Apr 18
First Fall Frost (36°F)
🍂 Oct 24

Temperature climatic data from weather station: PORTLAND INTL AP (USW00024229)

Precipitation climatic data from weather station: PORTLAND INTL AP (USW00024229)

Agricultural climatic data from weather station: PORTLAND INTL AP (USW00024229)